Hi! Can blender work with these:
uniform mat4 gbufferProjectionInverse;
uniform mat4 gbufferPreviousProjection;

uniform mat4 gbufferModelViewInverse;
uniform mat4 gbufferPreviousModelView;

uniform vec3 cameraPosition;
uniform vec3 previousCameraPosition;

Blender uses OpenGL for all of it's drawing.

Look at the bgl module to see what is exposed to the Python scripting interface.